- Notes, cautions, and warnings
- Overview
- Getting Started
- Understanding RAID concepts
- What is RAID?
- Organizing Data Storage For Availability And Performance
- Choosing RAID Levels And Concatenation
- Concatenation
- RAID level 0 (striping)
- RAID level 1 (mirroring)
- RAID level 5 (striping with distributed parity)
- RAID level 6 (striping with additional distributed parity)
- RAID level 50 (striping over RAID 5 sets)
- RAID level 60 (striping over RAID 6 sets)
- RAID level 10 (striped-mirrors)
- RAID Level 1-Concatenated (Concatenated Mirror)
- Comparing RAID Level And Concatenation Performance
- No-RAID
- Quick Access To Storage Status And Tasks
- Storage Health
- Hot Spare Protection Policy
- Storage Component Severity
- Storage Properties And Current Activity
- Alerts Or Events
- Monitoring Disk Reliability On RAID Controllers
- Using Alarms To Detect Failures
- Using Enclosure Temperature Probes
- Rescanning To Update Storage Configuration Changes
- Time Delay In Displaying Configuration Changes
- PCI Express Solid-State Device Support
- What Is PCIe SSD?
- PCIe SSD Features
- PCIe SSD Subsystem Properties
- PCIe Extender Cards
- Physical Device Properties
- Physical Device Tasks
- PCIe SSD In Slot Card Properties
- PCIe SSD In Slot Card Tasks
- PCIe SSD Subsystem Health
- Storage Information And Global Tasks
- Controllers
- What Is A Controller?
- RAID Controller Technology: SATA And SAS
- RAID Controller Features
- Controller — Supported RAID Levels
- Controller — Supported Stripe Sizes
- RAID Controller Read, Write, Cache, And Disk Cache Policy
- Background Initialization On PERC Controllers
- Non-RAID Controller Description
- Firmware Or Driver Versions
- Controller Health
- Controllers Properties And Tasks
- Controller Tasks
- Rescanning The Controller
- Creating A Virtual Disk
- Enabling The Controller Alarm
- Disabling The Controller Alarm
- Turning Off The Controller Alarm
- Testing The Controller Alarm
- Setting The Rebuild Rate
- Resetting The Controller Configuration
- Exporting The Controller Log File
- Foreign Configuration Operations
- Importing Foreign Configurations
- Importing Or Recovering Foreign Configurations
- Clearing Foreign Configuration
- Physical Disks In Foreign Virtual Disks
- Setting Background Initialization Rate
- Setting The Check Consistency Rate
- Setting The Reconstruct Rate
- Setting The Redundant Path Configuration
- Setting The Patrol Read Mode
- Starting And Stopping Patrol Read
- Changing The Controller Properties
- Managing The Physical Disk Power
- Properties In Manage Physical Disk Power Option
- Physical Disk Power On Unconfigured Drives And Hot Spares
- Managing Physical Disk Power Using The Customized Power Savings Mode
- Managing Physical Disk Power Using The QoS Option
- Managing The Time Interval For The QoS Option
- To Locate Manage Physical Disk Power In Storage Management
- Managing The Preserved Cache
- Encryption Key
- Converting To Non-RAID Disks
- Converting To RAID Capable Disks
- Changing The Controller Mode
- Auto Configure RAID0 Operation
- Viewing Available Reports
- Support For PERC 9 Hardware Controllers
- Enclosures And Backplanes
- Backplanes
- Enclosures
- Enclosure Physical Disks
- Enclosure Fans
- Enclosure Power Supplies
- Enclosure Temperature Probes
- Enclosure Management Modules (EMMs)
- Enclosure And Backplane Health
- Enclosure And Backplane Properties And Tasks
- Changing The Mode On 220S And 221S Enclosures
- Enclosure Management
- Identifying An Open Connector On The Enclosure
- Enclosure Components
- Connectors
- Tape Drive
- RAID Controller Batteries
- Physical Disks Or Physical Devices
- Guidelines To Replace A Physical Disk Or Physical Device
- Adding A New Disk To The System
- Replacing A Physical Disk Receiving SMART Alerts
- Other Disk Procedures
- Physical Disk Or Physical Device Properties
- Physical Disk Or Physical Device Tasks
- Physical Disk Tasks
- Blinking And Unblinking A Physical Disk
- Removing Dead Segments
- Preparing To Remove
- Rebuilding Data
- Canceling A Rebuild
- Assigning And Unassigning Global Hot Spare
- Setting The Physical Disk Online Or Offline
- Performing A Clear Physical Disk And Cancel Clear
- Enabling Revertible Hot Spare
- Enabling Instant Encrypt Erase
- Convert To RAID Capable Disk
- Convert To Non-RAID Disk
- Virtual Disks
- Considerations Before Creating Virtual Disks
- Virtual Disk Considerations For Controllers
- Virtual Disk Considerations For PERC S100, S110, S130, And S300 Controllers
- Virtual Disk Considerations On Systems Running Linux
- Number Of Physical Disks Per Virtual Disk
- Number Of Virtual Disks Per Controller
- Calculation For Maximum Virtual Disk Size
- Channel-Redundant Virtual Disks
- Creating Virtual Disks
- Reconfiguring Or Migrating Virtual Disks
- Starting And Target RAID Levels For Virtual Disk Reconfiguration And Capacity Expansion
- Maintaining The Integrity Of Redundant Virtual Disks
- Rebuilding Redundant Information
- Managing Virtual Disk Bad Block Management
- Recommendations For Clearing Bad Blocks
- Virtual Disk Properties And Tasks
- Virtual Disk — Available Tasks
- Reconfiguring A Virtual Disk
- Format, Initialize, Slow, And Fast Initialize
- Canceling Background Initialization
- Restoring Dead Segments
- Deleting Data On the Virtual Disk
- Performing A Check Consistency
- Canceling A Check Consistency
- Pausing A Check Consistency
- Resuming A Check Consistency
- Blinking And Unblinking A Virtual Disk
- Renaming A Virtual Disk
- Canceling A Rebuild
- Changing The Virtual Disk Policy
- Replacing A Member Disk
- Clearing Virtual Disk Bad Blocks
- Encrypting A Virtual Disk
- Create Virtual Disk Express Wizard
- Create Virtual Disk Express Wizard (Step 2)
- Create Virtual Disk Advanced Wizard
- Create Virtual Disk Advanced Wizard (Step 2)
- Create Virtual Disk Advanced Wizard (Step 3)
- Span Edit
- Virtual Disk Task: Reconfigure (Step 1 of 3)
- Virtual Disk Task: Reconfigure (Step 2 of 3)
- Virtual Disk Task: Reconfigure (Step 3 of 3)
- Slow And Fast Initialize
- Formatting Or Initializing A Disk
- Deleting A Virtual Disk
- Renaming A Virtual Disk
- Changing The Policy Of A Virtual Disk
- Split Mirror
- Unmirror
- Assigning And Unassigning Dedicated Hot Spare
- Virtual Disk Task: Replace Member Disk (Step 1 of 2)
- Virtual Disk Task: Replace Member Disk (Step 2 of 2)
- Considerations Before Creating Virtual Disks
- Moving Physical And Virtual Disks From One System To Another
- Protecting Your Virtual Disk With A Hot Spare
- CacheCade Using Solid-State Drives
- Troubleshooting
- Common Troubleshooting Procedures
- Cables Attached Correctly
- System Requirements
- Drivers And Firmware
- Isolate Hardware Problems
- Rescan To Update Information On SCSI Controllers
- Replacing A Failed Disk
- Using The Physical Disk Online Command On Select Controllers
- Recovering From Removing The Wrong Physical Disk
- Resolving Microsoft Windows Upgrade Problems
- Virtual Disk Troubleshooting
- A Rebuild Does Not Work
- A Rebuild Completes With Errors
- Cannot Create A Virtual Disk
- A Virtual Disk Of Minimum Size Is Not Visible To Windows Disk Management
- Virtual Disk Errors On Systems Running Linux
- Problems Associated With Using The Same Physical Disks For Both Redundant And Non-Redundant Virtual Disks
- Specific Problem Situations And Solutions
- Physical Disk Is Offline Or Displays An Error Status
- Receive A Bad Block Alert With Replacement, Sense, Or Medium Error
- Alerts 2146 Through 2150 Received During A Rebuild Or While A Virtual Disk Is Degraded
- Alerts 2146 Through 2150 Received While Performing I/O, Consistency Check, Format, Or Other Operation
- Read And Write Operations Experience Problems
- A Task Menu Option Is Not Displayed
- A Corrupt Disk Or Drive Message Suggests Running Autocheck During A Reboot
- Erroneous Status And Error Messages After A Windows Hibernation
- Storage Management May Delay Before Updating Temperature Probe Status
- Storage Management May Delay Displaying Storage Devices After Reboot
- You Are Unable To Log Into A Remote System
- Cannot Connect To Remote System Running Microsoft Windows Server 2003
- Reconfiguring A Virtual Disk Displays Error In Mozilla Browser
- Physical Disks Are Displayed Under The Connector Object Instead Of The Enclosure Object
- PCIe SSD Troubleshooting
- Common Troubleshooting Procedures
- Frequently Asked Questions
- Why Is A Rebuild Not Working?
- How To Avoid Removing The Wrong Disk
- How Can I Safely Remove Or Replace A Physical Disk
- How Do I Recover From Removing The Wrong Physical Disk
- How Do I Identify The Firmware Version That Is Installed
- Which Controllers Do I Have?
- How Do I Turn Off An Alarm
- Which RAID Level Is Best For Me?
- Supported Features
- Supported Features On PERC 6/ Controllers
- Controller Tasks Supported On PERC 6/ Controllers
- Battery Tasks Supported On PERC 6/ Controllers
- Connector Tasks Supported By PERC 6/ Controllers
- Physical Disk Tasks Supported By PERC 6/ Controllers
- Virtual Disk Tasks Supported By PERC 6/ Controllers
- Virtual Disk Specifications For PERC 6/ Controllers
- RAID Levels Supported By PERC 6 Controllers
- Read, Write, And Cache Policy Supported By PERC 6 Controllers
- Enclosure Support On PERC 6/ Controllers
- Supported Features On PERC Hardware Controllers
- Controller Tasks Supported On PERC Hardware Controllers
- Battery Tasks Supported On PERC Hardware Controllers
- Connector Tasks Supported By PERC Hardware Controllers
- Physical Disk Tasks Supported By PERC Hardware Controllers
- Virtual Disk Tasks Supported By PERC Hardware Controllers
- Virtual Disk Specifications For PERC Hardware Controllers
- RAID Levels Supported By PERC Hardware Controllers
- Read, Write, Cache And Disk Cache Policy Supported By PERC Hardware Controllers
- Enclosure Support On PERC Hardware Controllers
- Supported Features On SAS 6iR And PERC H200 Controllers
- Controller Tasks Supported On SAS 6/iR And H200 Controllers
- Battery Tasks Supported On SAS 6/iR And H200 Controllers
- Connector Tasks Supported On SAS 6/iR And H200 Controllers
- Physical Disk Tasks Supported On SAS 6/iR And H200 Controllers
- Virtual Disk Tasks Supported By SAS 6/iR And H200 Controllers
- RAID Levels Supported By SAS 6/iR And H200 Controllers
- Virtual Disk Specifications For SAS 6/iR And PERC H200 Controllers
- Read, Write, And Cache Policy Supported By SAS 6/iR And H200 Controllers
- Enclosure Support On SAS 6/iR And H200 Controllers
- Supported Features On The PERC S100, PERC S110, PERC S130, And S300 Controllers
- Controller Tasks Supported On The PERC S100, PERC S110, PERC S130, And S300 Controllers
- Physical Disk Tasks Supported By The PERC S100, PERC S110, PERC S130, And S300 Controllers
- Virtual Disk Tasks Supported By The PERC S100, PERC S110, PERC S130, And S300 Controllers
- Virtual Disk Specifications For PERC S100, PERC S110, PERC S130, And S300 Controllers
- RAID Levels Supported By The PERC S100, PERC S110, PERC S130, And S300 Controllers
- Read Write Cache And Disk Cache Policy Supported By The PERC S100, PERC S110, PERC S130, And S300 Controllers
- Enclosure Support On The PERC S100, PERC S110, PERC S130, And S300 Controllers
- Supported Features On The Non-RAID Controllers
- Controller Tasks Supported On The Non-RAID Controllers
- Battery Tasks Supported By Non-RAID Controllers
- Connector Tasks Supported On The Non-RAID Controllers
- Physical Disk Tasks Supported On The Non-RAID Controllers
- Virtual Disk Tasks Supported By The Non-RAID Controllers
- Enclosure Support On The Non-RAID Controllers
- Enclosure And Backplane Features
- Maximum Supported Configuration For SAS Controllers
- Supported Features On PERC 6/ Controllers
- Determining The Health Status For Storage Components
- Health Status Rollup: Battery Is Charging Or Dead
- Health Status Rollup: Physical Disks In A Virtual Disk Are Failed Or Removed
- Health Status Rollup: Physical Disks In A Virtual Disk Are Unsupported, Partially, Or Permanently Degraded
- Health Status Rollup: All Physical Disks In A Virtual Disk Are In Foreign State
- Health Status Rollup: Some Physical Disks In A Virtual Disk Are In Foreign State
- Health Status Rollup: Virtual Disk Is Degraded; Physical Disks Are Failed Or Rebuilding
- Health Status Rollup: Virtual Disk Is Failed
- Health Status Rollup: Unsupported Firmware Version
- Health Status Rollup: Enclosure Power Supply Failed Or Power Connection Removed
- Health Status Rollup: One Enclosure Fan Is Failed
- Health Status Rollup: One Enclosure EMM Is Failed
- Health Status Rollup: One Enclosure Temperature Probe Is Failed
- Health Status Rollup: Lost Both Power Connections To The Enclosure
- Health Status Rollup: One Or More Physical Disks Are Failed
- Health Status Rollup: Physical Disk Is Rebuilding
Server Administrator Storage Management 8.3 User’s Guide
Understanding Hot Spares
A hot spare is an unused backup physical disk that can be used to rebuild data from a redundant virtual disk. Hot spares remain in standby mode. When a physical disk that is used in a redundant virtual disk fails, the assigned hot spare is activated to replace the failed physical disk without interrupting the system or requiring your intervention. If a virtual disk using the failed physical disk is not redundant, then the data is permanently lost without any method (unless you have a backup) to restore the data.
Hot spare implementation varies for each controller controller. For more information on hot spares, see:
- Considerations For Hot Spares On PERC S100 And PERC S300 Controllers
- Global Hot Spare Considerations On A SAS 6/iR
The following sections describe procedures for assigning a hot spare:
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